Early Identification And Monitoring Of Reservoir Landslides Based On InSAR Technology

Our country is high risk in geological disasters,in which landslide disasters are widely distributed,and the frequency is high,affected.Therefore,it is of great significance for early monitoring and hidden dangers for landslides.At present,the traditional monitoring method has insufficient precision,poor timeliness,high labor intensity,and high cost.This paper uses the InSAR method to monitor the formation of Bai He Tan reservoir area,and combine the slope hidden dangers to identify the slope hidden dangers and establish a landslide early recognition system.Providing new scientific programs for disaster warning prevention,compensating for short-term identification methods for traditional landslides.The main research contents of the article are as follows:(1)Two ways to use D-InSAR and SBAS-InSAR for deformation monitoring.DInSAR experiments 4 pieces Sentinel-1 image analysis is obtained from May 2015 to the third phase of March 2017.SBAS-InSAR experiments use 12 pieces Sentinel-1 imaging analysis to get the study area from March 2016 to March 2017 to demonstrate and an average variable rate.(2)Regional risk identification is performed using D-InSAR results,and the main settling zone is concentrated in the reservoir section.The use of SBAS-InSAR deformation results to obtain a hot spot map and the landslide is preliminary.The position of the circle is separately studied and the identification effect is verified.(3)Regional risk recognition is performed using D-InSAR results,and the main settling zone is mainly concentrated in the reservoir segment,and the part exists near the dam site.The use of SBAS-InSAR deformation results to obtain a hot spot map and the landslide is preliminary.The position of the circle is separately studied and the identification effect is verified.(4)In order to further improve the convenience of the InSAR results,the ramp unit is introduced into the landslide identification system,and the ramp unit is divided into the 5km range in the basin and grading according to the InSAR monitoring value.A remote sensing slope is used to use the maximum likelihood method and the support vector machine method to increase the scope of landslides.The comprehensive monitoring and evaluation results conducted a full-stream landslide hidden danger to identify the final high slider hidden dangers,establish a landslide early identification system,and achieve early identification and monitoring of landslides.